High speed light modulation

Details High speed light modulation High speed light modulation

1991-11-12

1993-05-11

Arnold, Bruce Y.

Optical: systems and elements

Optical modulator

Light wave temporal modulation

359240, 359245, 359276, 359296, 505701, 372108, G02F 101, G02F 103, G02B 2600, H01B 1200

Patent

active

052106373

ABSTRACT:
A device for modulating light, wherein a layer of material having a superconducting state is placed in the optical path of a light source and is switched between transparent, non-superconducting and non-transparent, superconducting states by a modulation circuit, thereby providing optical data modulation. A cooling device is provided to maintain the layer of material in its superconducting state. The light source is maintained at a constant optical output which reduces spectral dispersion.

REFERENCES:
patent: 3770339 (1973-11-01), Ramaswamy
patent: 4744625 (1988-05-01), Lanzisera
patent: 4768852 (1988-09-01), Ih
patent: 4919521 (1990-04-01), Tada et al.
patent: 5015619 (1991-05-01), Wang
patent: 5110792 (1992-05-01), Nakayama et al.
IBM Technical Disclosure Bulletin, vol. 21, No. 11, Apr. 1979, pp. 4715-4716, Josephson Optical Modulator.

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